Kneading or beating apparatus



(No Model.)

B. F.'S PARROW. I v KNEADING'OB.` BEATING APPARATUS. No. 267,273. Patented Nov. '7, .1882.

UNTTED STATES PATENT Carica.

BENJAMIN F. SPARROW, OF CAMBRIDGE, MASSACHUSETTS.

KNEADING OR BEATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 267,273, dated November 7, 1882,

Application tiled June 19, 1882. (No model.)

To all whom it may concern Be it known that l, BENJAMIN F. SrARRow, a citizen ot' the United Statesresiding atGambridge, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Apparatus for Kueading or Beating any Substances to be Mixed and Stirred; and l do hereby declare that the following is a full, clear7 and exact description ot' the invention, which will enable others skilled in the art to which it appertains to make and use the same.

My invention consists in the arrangement of a pair of stirrers ofstout construction and stirrup-like in shape, each connected with its revolving apparatus by an arm or shank ofrequisite curvature to project it away from the center about which it is revolved, so that when both are separately and simultaneously revolved they have a sweeping movement, and, without interfering; with one another, are swept around and through the receptacle in which they are operated, and by their combined movement cover and sweep every point, substantially, ot' the whole space within the reach of either; and it consists in combining with said stirrers, so arranged, an elongated pan conformed in shape and dimensions to the area swept by said stirrers, so that its contents are contined within the continuous action ofthe stirrers, and in combining said stirrers with a bail-like stand, or an arm to support and hold them in place within the said pan, and in the means of fastening said pan rmly to the supporton which it rests. r.lhe two stirrers, thus made and arranged, are not designed to act, and do not act, together, like shears, to cut the material on which they operate. So far as they act together they pull and draw apart the material, while each, by its independent action, mixes and stirs the different portion it sweeps through, and which it throws from side to side and end to end of the pan, each operating altern atelyon the different portions. The two together, acting simultaneously, secure the thorough mixing of the whole. Cross-bars, horizontal, vertical, or inclined, and more or less numerous, according to the consistency of the material to be operated on, may be placed within the outlines of the stirrers to increase their efficiency. The said arrangementof the stirrers is effected by attaching each of them to the corresponding point of one of a pair of wheels, between the hub and the rim, by means of the curved arm or shank, which projects substantially the whole body ofthe stirrer beyond the rim of' its wheel, as is shown in the drawings, Figuresl and 2. They are first set in line, side by side, in the same vertical plane, the outside edge,` a', of one under the wheel to which the other is attached, and as near the inner edge, I), ofthe other as is consistentwith the free movement of both as they pass each other. The parts traveled by the bottoms of the stirrers as they are swept around the pan are indicated in Fig. 7 by the spaces between the dotted lines H and K and the dotted lines H and K', showing the width ofsweep ot' the wholeapparatus as aboutlwothirdsthe length thereof.

The drawings, Figs. l and 2, show the stirrers A A attached to the wheels w w by their Shanks s s about midway between hub and rim. In Fig. l the stirrers are shown by a a b b', the inner and outer lines otl their bodies in the position in which they are iirst set, and also by the dotted lines a a b b in their position when they have accomplished half ofone revolution. The wheels turnon journals projecting downward from the ends ot' the crossbar h, which rests, as in Fig. 1, on the bail (l, in Fig. 2, on the end ot' the arm D. rlhe latter form ofthe support is used to advantage with a large-sized apparatus, as its support is independent of the pan, at F, where it swings on a hinge to permit the stirrers to be raised (dotted lines, Fig. 2) clear of the pan, and the pan to be removed and replaced without detaching the stirring apparatus from the place to which it may be permanently secured. The said gear-wheels are secured on the journals by the washers Je, Fig. 3, held in place by headed screws inserted endwise into the journals.

The bail C is rigid and substantial, and is held upright by a wide foot or base, m, on each end, which is bent down to clasp the rim of the pan. The thumb-screw r fastens said foot ou each end securely to its side of the pan..

The post p is cast solid with the cross-bar h, and rises from the center thereof. Its pro-A longation t, Fig. 3, below the center ot' the crossbar sets into the center of the bail G, or end of the arm D, and is there fastened by a screw, c', rmly uniting the cross-bar and post aud their attachments with said bail orarm. Said post serves as a handle by which to grasp and IOS control the apparatus when in operation, and as a support and place of attachment for an arm, the end of which, o, is thejournal of the driving-wheel d.

Fig. 4 shows the driving-wheel d with handle longer than is shown in Fig. 1 or 2 for use when a slower motion and greater purchase are required. This handle is grooved 0n a rib raised on the wheel, and is secured thereto by a screw. t

Figs. 5 and 6 show respectively the fork e and latch y, which f'astens the pan in place t0 permanent pegs z, Fig. 7, and Fig. 7 also shows the said fork and latch riveted and soldered to the bottom of the pan.

Fig. 8 is a vertical section of the pan in front ofthe bail, Ashowing the bailwith its foot clasping the pan and fastened by the thumbscrews o'. The lower part ofthe post p is shown ris. ing from the. cross-bar h, the end of which is also cut off in front of the bail C, the tongue t or prolongation of the post being set into the bail and secured by the screw z'. The downward curvature of each side of the crossbar, with the hub on the upper side of the gearwhcel, makes room over the gears, where they engage each other, for the bail.

In the drawings the same letter refers to the same part as it is shown in the several tigures.

My described apparatusis specially designed for mixing cake and for beating eggs in considerable quantity. It may also be used as a churn, and for stirring together chemicals and any like material, whether dry or wet, and, when made suficiently strong, for mixing dough.

I claim as my invention in a mixing or k neading apparatus- 1. The pair of stirrers described, arranged and connected with a pair ot' wheels, as described and shown, and for the purpose set forth.

2. A pair of stirrers having the arms s s', as y shown and described, and attached, as described, to any revolving apparatus, for the purpose set forth.

' 3. Theelongated pan,as shown and described, in combination with the stirrers described, the arms s s', and any revolving apparatus, arranged as described, for the purpose set forth.

4. The combination, as described,- of the bail C or arm D, the cross-bar h, and a pair of wheels With stirrers attached, as described.

5. In combination, the driving-wheel d, post 1J, cross'bar h, bail C or arm 1), with the gearwheels and a pair of stirrers, all as described.

6. In combination, the pan or other receptacle, E, with the fork e and latch y, for the purpose set forth.

7. In combination, the pan E or other receptacle, and latch y, for the purpose set forth.

8. In combination, the pan or other receptacle and the bail and the broad clasped foot m, as described, for the purpose set forth.

9. An elongated pan conformed in shape and dimensions to the area swept by a pair ofstirrers, arranged, as described, in combination with said stirrers, for the purpose set forth.

10. A stirrup-shaped stirrer with cross-bars, as described, for the purpose set forth and dcscribed.

BENJAMlN F. SPARROHT.

XVitnesses:

0. I. NOBLE, SAMUEL SNOW. 

